Device and method for detecting the frothing ability of a fluid
a technology of frothing ability and fluid, which is applied in the direction of water supply installation, instruments, transportation and packaging, etc., can solve the problems of contaminating the clarified water, wasting labor and production, and posing an environmental pollutan
Inactive Publication Date: 2009-11-19
NEWCASTE INNOVATION LTD
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Benefits of technology
[0031]Preferably, the method further includes the step of measuring said froth. Preferably, said measuring step includes measuring one or more of the following parameters: flu
Problems solved by technology
Whilst frother assists in the flotation process, it acts as a contaminant in the tailings stream and poses an environmental pollutant if it is discharged into the tailings dam.
The presence of too much frother in the tailings stream contaminates the clarified water, since excess frother causes cavitations in the pumping system and “froths out” the coal processing plant.
Flushing the frother out of the pumping system requires the shut down of the entire plant and the associated down time spent in cleaning out the pump system results in wasted labour and lost production.
This problem is exacerbated by the presence of other substances in the tailings stream, such as dissolved salts and some solids, which also facilitate the formation of froth in the liquid.
In this context, coal separation by flotation typically involves only 20% of the coal produced by the entire coal processing plant and is limited to the recovery of fine coal, whereas the rest of the plant produces the remaining 80% of the coal.
This, however, reduces the efficiency of the flotation cells in recovering fine coal.
Method used
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[0039]Referring to FIG. 1, a method for detecting the frothing ability of a fluid includes the steps of obtaining a portion of the fluid at step 1 and entraining air into the fluid portion at step 2. At step 3, the entrained air and the fluid portion are mixed and at step 4 the amount of froth generated by the mixing step 3 is displayed to provide an indication of the frothing ability of the fluid.
[0040]The method is implemented by diverting the fluid portion from a fluid stream to take a representative sample and detect the ability of the fluid portion to generate froth by determining the presence of any frothing agents, including frother, present in the fluid. The fluid stream is any one of the various feed, circulating medium, product and tailings streams of a minerals separation process, such as a froth flotation process employing Jameson-type flotation cells. The circulating medium stream includes the clarified water stream recycled for use in the rest of the coal plant via a p...
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The present invention provides a device (10) for detecting the frothing ability of a fluid, said device including: an inlet (11) for receiving a portion of said fluid; means (12) for entraining air into said fluid portion; a mixing chamber (13) for receiving said air entrained fluid portion, said mixing chamber (13) being adapted for mixing said fluid portion and said air; and a detector (15) for detecting the amount of froth (18) generated in said mixing chamber (13). The invention also provides a method for detecting the frothing ability of a fluid.
Description
FIELD OF THE INVENTION[0001]This present invention relates to a device and method for detecting the frothing ability of a fluid, and in particular, a device and method for detecting residual frother in a liquid stream in a minerals separation process.[0002]The invention has been developed primarily for use in detecting residual frother in a coal separation process, and will be described hereinafter with reference to this application. However, it will be appreciated that the invention is not limited to this particular field of use. In particular, it is contemplated that the invention is applicable to a separation process using a frother for any mineral, including iron ore, copper and lead. It is also contemplated that the invention is applicable to any field where detecting the frothing ability of a fluid is required.BACKGROUND OF THE INVENTION[0003]Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widel...
Claims
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CPCB03D1/02G01N13/02B03D1/1412B03D1/247B03D1/028G01N2013/025Y10T137/87587Y10T137/0318
Inventor LAMBERT, NOEL WILLIAM ALEXANDER
Owner NEWCASTE INNOVATION LTD